

Pollution per GDP is a better measure. https://ourworldindata.org/grapher/co2-intensity Pollution per GNP would be even better but I can’t find it.
Individuals don’t pollution much, it’s mostly industry. Really poor countries often don’t pollution much because they can’t afford to. Sometimes they pollute prodigiously because the only thing they can afford to do is destructive resource extraction. Rich countries can often outsource their pollution to poorer countries.
China has been making mind boggling investments in renewables. They have been expanding all their energy sources but their renewables have the lions share of the growth.
They’ve been building roads and all kinds of infrastructure. That’s what the BRI is all about, even if they’re being a bit quieter about saying the phrase. They like to build their long haul roads on elevated columns; not only because it’s less disruptive to wildlife but because it lets them use giant road laying robots to place prefab highway segments.
They dropped the one-child policy a while back but they’re having some trouble getting people to have more babies. That said, there’s some research that suggests that rural populations around the world are severely undercounted, so they may have a bunch more subsistence farmers than they, or anyone else, realizes.
This has been going on for years and will continue.
China really really really needs a robust and diverse energy infrastructure. Industry needs huge amounts of energy. AI needs huge amounts of energy. The military needs huge amounts of energy.
Coal is unreliable and dirty. Oil can be blocked at the Straight of Malacca and a few pipelines.
China is also the world’s factory. They own the entire logistics chain for producing renewable generators; from raw materials to final assembly. They have all the infrastructure to not only build solar panels and wind turbines at scale, they’ve scaled up building the machines that build them.